Update comment style generic syntax

lib/src/stream_channel_transformer.dart

Index: lib/src/stream_channel_transformer.dart
diff --git a/lib/src/stream_channel_transformer.dart b/lib/src/stream_channel_transformer.dart
index 46232d74cc5df535ae22a844ac76d0fd97cd7f8f..d6d10ff5ef5c8c69febb3f7077681f7aa19e38d1 100644
--- a/lib/src/stream_channel_transformer.dart
+++ b/lib/src/stream_channel_transformer.dart
@@ -41,9 +41,9 @@ class StreamChannelTransformer<S, T> {
   /// throws a [CastError]. This also means that calls to [StreamSink.add] on
   /// the transformed channel's sink may throw a [CastError] if the argument
   /// type doesn't match the reified type of the sink.
-  static StreamChannelTransformer/*<S, T>*/ typed/*<S, T>*/(
+  static StreamChannelTransformer<S, T> typed<S, T>(
           StreamChannelTransformer transformer) =>
-      transformer is StreamChannelTransformer/*<S, T>*/
+      transformer is StreamChannelTransformer<S, T>
           ? transformer
           : new TypeSafeStreamChannelTransformer(transformer);